Propeller.



PATEl\IT ED MAY 1, 1906;

No. 8l9,540.

P. C. IGORDON.

PROPELLER.

APPLICATION FILED MAY 27. -1905.

l BY

ATTRNEYS UNITED singes rYNIs OOLWELL GORDON,

PATENT OFFICE.

OF ASOTIN, WASHINGTON.

PROPELLER.

Specication of Letters Patent.

Patented May 1, 1906.

Application filed May 27, 1905. Serial No. 262.596.

tures of construction and arrangement'r of parts, which will be fully set forth hereinafter and particularly pointed out in the claims.

Reference is to be had to the accompanyingdrawings, which illustrate, as an example, the preferred embodiment of 'my invention, in which drawings like characters of reference indicatelike parts in the several views, and in which- Figure 1 is a view showing the hood of the propeller in section and illustrating the sleeve for reversing the blades. Fig. 2 is an enlarged detail section on the line 2 2 of Fig. 1', and Fig. 3 is a detail view showing one ofthe blades and tha toothed sleeves for operating the same.

10 indicates the propeller-shaft, which is connected with the engine andhas an enlargement 11 at its rear or after end. This enlargement 11 is formedwith cavities 11a, which loosely receive theconcave or convex disks or circular flan es 12 attached to the propeller-blades 14. rojecting inward from the said disks or circular an'ges 12 are radial studs '15, which are loosely seated in cavities 11b, formed in said enlargement 11" of the shaft. ,The blades 14 ,with their parts 12 and 15, are thus connected with the enlargement 11 of the Shaft 1,0',I so that the blades may be turned around their longitudinal axes to exert the driving iniiuence either ahead or astern or by moving the blades to their intermediate position the rotation of the propeller will impart no drivin forc'to the ves,

sel. Fitted loosely in the s aft 10-isa sleeve or tubular shaft 16, which has a ruiter-gear 17 at its rear end. `The teeth of this'gearu mesh with the corresponding teeth 125, formed on the iianges 12,l (see Fig. 3,) so that by turning the shaft 16 relatively to the shaft- 10 an individual turning movement will be given to the blades 14, thus reversing or othorwise adjusting the propeller, as will be understood from the foregoing description.

Screwed on the after end of the shaft 16 is a sleeve 18., which has a curved 'flange 19, covering the gear 17 and the forward portion of the flanges 12 of the blades 14. At the after -end ofthe enlargement 11 a concave or convex hood 2O is arranged, which engages the rear portions of the iianges 12 and, with the ilange 19, serves to hold the propeller-blades in place. The hood 20 is held in position by any`desired means-for example, by a bolt 21, as shown. It will then be seen that the .blades are mounted so that they may be readily' disconnected and new blades inserted in case of breakage or injur to any of the parts.

At its forwardk end t e tubular shaft 16 carries a collar 22 andpin 23. Fitting over said' end of the shaft is a sleeve 24 which has a spiro-form'groove l25, seating the pin 23. Keyed in the shaft 14 at the front extremity of the tubular shaft 16 is acollar 26, which is engaged by the collar 22. This collar carries a pin 27, fitting in a slot 28 in the sleeve 24,

the slot 28 extending longitudinally the sleeve, as shown in Fig. 1. At its front end the sleeve 24 has an annular groove 29 formed therein to facilitate theconnection with the sleeve of a reversing-lever 30. The parts 30 and 24, with their connections, are arranged -within the vessel rearward of the engine, the

shaft 10 extending forward for connection f with the engine, as will be understood from the prior art. By throwing the lever 30 the sleeve 24 is moved longitudinally ofthe shaft 10, andthe cam-slot 25, acting on the tubular shaft 16 through the pin 23, imparts a rotation to this sleeve relatively to the solid shaft 10, and by this rotation the blades of the lpropeller maybe shifted, as hereinbefore ex ained.

avlng thus described the preferred form of my invention, what I claim as` new, and

desire to secure by Letters Patent, is

1. Inv a reversin propeller the combination of a main sha t having a substantiall spherical enlargement at one end thereof and having portions of the surface of the en- IOO largement cut away to form recesses circular s in outline, ropeller-blades having flanges to iit within t e recesses, a sleeve on the main I `.shaft and having a flange for engaging lthe ianges of the pro eller-blades, a hood on the end of the shaft orengagingthe flanges `of the pro eller-blade and means whereby to reverse t e propeller-blade. y

2. a reversing propeller, the combina- IIO tion of a main shaft having an enlargement at one end thereof, a propeller-blade provided with a oonoavo-oonvex disk or flange engaging the enlargement on the after end of the main shaft, a tubular shaft or sleeve loosely mounted on the main shaft, a gear on the tubular shaft, said gear being meshed With the teeth on the flange or disk of the propeller-blade, a sleeve mounted on the tubular shaft and having a flange engaging the flange of the blade, a hoodattaohed to the after end 

